91498 Mastercool Universal Valve Core Remover/Installer Kit DOWNLOAD INSTRUCTIONS The Mastercool 91498 is the only valve core remover kit that has a safety nut allowing the technician to freely access the...

91496 Mastercool Valve Core Remover/Installer with Access Port Temporarily removing the valve core eliminates the pressure restriction, allowing the full flow of refrigerant and vacuum throughout the recovery, evacuation, and recharge...